Gas-engine valve mechanism.



M. A. THIEL.

GAS ENGINE VALVE MEGHANISM. APPLIUATION FILED SEPT. 22, 1910.

Patented July 1, 1913.

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wi )C1/Lagoa o M. A. THIEL. GAS ENGINE VALVE MBCHANISM. APPLIOATION FILED $139122, 1910.

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Patented July 1, 1913.

UNITED STATES APATENT OFFICE.

MARTIN a. THIEL, oF MOUNT-VERNON, OHIO, assIoNoR To TITI; o. a G. COOPER co., Yor* MOUNT VERNON, OHIO, A CORPORATION OF wEsT VIRGINIA.

`GAS-ENGINE VALVE MECHANISM.

Specification of Letters Patent.

Patented July 1, 1913.

Application led September 22, 1910. Serial No. 583,298.

lnisms,'of whichthe following is a full, clear,

and exact specification, such as will enable others skilled in the art to Which'lt apper.l tains .to make and use the'same.

for four cycle gas engines of the ty e in which opposed puppet inlet and ex aust valves are actuated from ec centrics on a lay sha ft alongside of the cylinder.

My invention relates to a cylindrical in-l let r'egulatingvaive which is mQunted to ro- 'tate on the stemjof the inlet valveand'to reci irocate with thc same. The reciprocation o the regulating valve is uniformand serves to open' and closethe gas and air ports synchronously with the o ening and-closing of the inlet vvalve,'-while t e rotation of the regulating valve is varied underv the go/vernor action and serves to regulate the quantity of' air and gas admitted in accordance with the load on the engine. Y

The present improvements in this respect lie .especially in the form and construction' of the regulating valve, the manner of mounting it in the valve housingor charnber, the means for connecting the regulatirg valve with the governor lin age and .in various otherfeatures offstructure and com` bination of parts', all oi'i which will be fully set forth'hereinafter andl particularly pointed out in the claims.

The invention involves other features .of importance, all of whichiwill be fully set forthl'ereinafter and-particul'arly pointedv out in'4 the claims. A

Forfths purpose reference is now had to the accompanying drawings, which represent, as an example, the preferred manner of embodying my invention.

In said drawings: Figure l is an enlarged section of the inlet ,valve taken transversely of the engine; and Fig. 2 is a similar section ginder. Over and aroun except that it is taken longitudinally of the en ine.

he gear is herevshown on a horizontal elle-gine, 10 representing the cylinder. The

i et port 11 1s in the u per side of the cyls said port izs` bolted the inlet valve housing or chamber .12. The

housing 12 is provided-with chambers 15 and 16 to which the air and gas are respectively supplied. In Fig. 1, 17 indicates the outline of a valve regulating device intended to be set by manual Operation according to the known composition of the gas and having nothin to do with the present invention.

18 lndicates the regulating vvalve case which is cylindrical and -ittedwithin the 'My invention relates to valve mechanismshousing 12. This case is secured in place by' long bolts 19 which `ass through a flange 20 on the up er end ofp the case and extend through the ousing 12 to thecylinder, the case also serving to retain in seat 21 of the inlet valve. Sai regulating valve case 18 is formed with ports'lB respectively communicating with the chambers '15 and 16. 2 2' indicates the inlet valve and 23 its stem, whichlatter' extends cen- I trallyfthrough the parts 12 and 18 and rotatably carries the hub 24 of the .c lindrical regulating valve 25. This valve ts snugly Ywithin the case 18 and has ports 25 therein,

adapted, when the valve 2 2 is open, to register with the ports 18a. This valve 25 recipr'ocates with the stem 23 and valve 22,thus

(position the bringing the ports 25"L to the level ofthe' jpli-m18 when the valve 22 is open; and said -valve 25 turns on the stem for the purpose ofJ increasing or diminishing the extent of lap of said ports 25A and 18, thus increasing or diminishing the quantity of air and 'gas admitted to thecylinder o f the engine. A

A tapering comform bonnet 26 surmounts the housing 12 and encircles, at its base, the' flange 20 of the case 1 8 andthe upper end of the regulating valve 25.

At a point slightly above those parts the bonnet 26 has an internal annular rib 2Ga horizontally dis- Y posed and forming a track against the under face of which runs the regulating valve controllingling 27. This ring is rotatably sustained by rollers 28 which are mounted within the bonnet immediately below the ring and contact with its under surface. Said ring has bolted thereto inside of the track 26B an arm 29 with which governor connection 304l is made, so that the rin rotated as the governor is affected.

the regulatingr valve 25. The members of theserpars o lugs are rovided with parallel opposing verticnlf aces` and between said members of the pairs of lugs 31 are rewo pairs vof lugs 31 'rise from the upper end of ceived studs or blocks 32. These blocks are mounted on inwardly and downwardly extending arms 33 carried bythe controlling ring 27, so that as said ring is rotated by the governor, the regulating ring is correspcndinglyi'rotated, yetsaid .valve is allowed free longitudinal motionv following the inlet valve as explained. The regulating valve, it will be observed, is exposed at its .upper end through the various openings in the bonnet 26 and said valve is formed with a head 34 at its outer or top en'd. which forms the inclosing wall of the chamber within the regulating valve. The ring 27 and its connecting arts are also exposed above the valve and) readily accessible. This leaves all parts of the mechanism e osed and accessible excepting the inlet va ve itself and the 'inttior portion of the regulating valve.

The inlet valve, however, is readily removable by removing the parts above, which allows the seat 21 to be taken out and then the valve itself may" b'e lifted through the port.

The upper end of the valve stem 23 projects above the top Wall 34 of the regulating valve and is threaded into a nut which bears down on said wall 34 and receivestwo bolts 36 rigidly fastening it to the inlet valve stem coupling 37. The coupling 37 is threaded and pinned. to the valve stem extension 38 forming a rigid connection with the valve stem proper. The inlet valve stem extension 38 projects through the spring case 39 and at its upper end is joined to a spring plate 40 moving freely'with the stem in said case 39. The case 39 contains the multiple Springs -41 which bear between the spring plate 40 and the bottom plate 42 of the spring case. By means of these springs and the connections abovedescribed the inlet valve 22 is normally seated firmly. The coupling 37 serves the further function of a bearing for the fulcrum pin 43 of the multiplying lever 44.. Thislever forms part of the gear for operating the inlet valve and it straddles the coupling 37, as shown. Said multiplying lever extends outward from the inlet valve stem and its outer end is sustained by links 45 pvoted to the lever and to the projecting lugs nn the bonnet 26. These links are located at '.he outer side of the bonnet and the bonnet is oriiced for the re ception of the multiplying lever as shown.

Above the multiplying lever 'the toe 46 operates. The toe is also of bi-part formation and straddles the inlet valve stem extension, its rounding lower surface bearing on the rounding upper surface of the multiplying lever. The inner end of the toe is pivoted on a in 47 carried in a bearin 48 which is provided with a yoke 49 encirc ing a stud 50 on the base plate of the spring case 39.

61 indicates a screw threaded into the lug 5,0 and engaging the yoke to adjust it and the bearing 48. By this arrangement the position of the pivot pin 47 and therefore of the toe may be adjusted at will. The toe 46 extends substantially horizontally over the multiplying lever to a point outside of the bonnet and is there pivoted to the eccentricv rod 52 by which a vertical swinging motion is imparted to` the toe and transmitted through it to the valve stem, pulling the stem down against the springs 41 and opening the inlet valve. By adjusting the pin 4.7 wear may be taken up'and knocking of the parts prevented. j

The operation of the mechanism will it' is thought be understood from the foregoingA description. The eccentric brings about regular inward or opening movement-s of t-he valve and the valve is, of course, set in time with the cycle of the engine. As the inlet valve opens the regulating valve moves inward correspondingly and the ports 25 are brought into the plane'of the ports 18. These ports register to a degree determined by the governor action on the ring 27 rotating the valve 25, according to which as the load increases the valve 25 is` turned to increase the degree of register of the ports. This allows an increased supply of air and gas and therefore explosions of increasedggs As the load lessens the degree 'of force. registry of the ports is decreased with a corresponding decrease in power. lation, therefore, is one in which the amount of the charge is variedrather than its quality or composition, resulting in a constant mixture with variablecompression; The valve is returned to its seat by the springs 41, subject to the returi of the eccentric.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of thc United-States, is:

1. In a gas engine valve mechanism, the combination of a reciprocating in let val've audits stein, a regulating valve having an outer end integral therewith which serves t0 separate the valve chamber from the atmosphere arrangcdto slide with the inlet valve and stem and mounted on the stem to turn independently thereof, a rotatable membeil mounted independently of the regulating valve, members carried by said regulatin (T valve having sliding connection with said' This reguintegral therewitlrwhich se arates the valvqfi chamber from the atmosp erc, a rotatable.4 member` having sliding connection with the'P regulating valve, whereby to transmit rotary motion to vthe valve independent of its slidmg action, :1nd means for rotating said ro- Loeegoaa tatable member, said rotatable member being in the form of an annulus encircling the valve stern.

3. In a gas engine valve mechanism, the combination of a reciprocating inlet valve and its stem, a regulating valve arranged to slide with the inlet valve and Stem and mounted 0n the stem to turn independently thereof7 forked membera carried by said regulating valve7 a rotatable member mounted independently of the regulating valve and having sliding connection with the regir lating valve through said forked members and means for rotating said member, said rotatable member being in the form of an annulus encircling the valve Stein,

4. ln a gas engine valve mechanism, the combination of a reciprocating inlet valve, a rotating regulating valve having an outer integral end exposed to the atmosphere reeiprocating with the inlet valve, rotatable member having sliding connection with the (Maples of this patent may be obtained fer tive cents each, by aaldressing the Washington, G.

regulating valve, whereby to transmit rotary motionto the valve independent of its sliding action, rotatable member, said rotatable member having ite axis of rotation coincident to that of the regulating valve.

5. ln a gas englne valve mechanism,

the

combination of a reciprocating inlet valve, 30

a rotatable regulating valye sliding with the inlet valve and having two lugs projecting longitudinally therefrom, av rotatable ring independent of the regulating valve, the

ring having a projection slidingly engaged 35 between the lugs., and' means Jfor rotating the ring.

In testimony whereof4 I have Signed my name to this Specification in the presence of two subscribing witnesses.

MARTIN Y Witnesses: a

Fano H, THOMAS5 M. B, 'SMALLnY..

A. THIEL.

Commissioner of Entente.

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and means for rotating said 25 

